> mick crane <mick.cr...@gmail.com> wrote: > > regarding firewall discussion I'm uncertain how firewalls are > > supposed to work. > > I think the idea is that nothing is accepted unless it is in response > > to a request. > > What's to stop some spurious instructions being sent in response to > > genuine request?
Just for the record, what you described (nothing is accepted unless it is in response to a request) is more like the way that NAT worked (at least in its original incarnations). (I say it that way because I haven't kept up with NAT, so don't know how it may have changed).